No, this is definitely an iOS 8.3 bug, Allen. I have an iPad mini (original, 24/12 old) and an iPhone 5 (not S, 18/12 old). Updated both from 8.2 to 8.3. I keep them and the apps up to date and run a tight ship.
Since the update, the iPhone has been behaving normally.
However, starting immediately after the update, the iPad has been rebooting: when you plug it into the power and it goes to sleep, it reboots itself. This NEVER ONCE happened before the 8.3 update -- and I think I started with this iPad on iOS5 or at least 6, with all the updates inbetween. If you want to use it again shortly after plugging it in, you have to wait about five-ten minutes (as other have reported). So far, it has always rebooted successfully. But you do have to put in your passcode in response to "you have to enter your passcode upon rebooting" message; and tell it to trust your current computer connect once again.
It just now rebooted itself once again when plugged into the computer USB port, while in the middle of a sync (the screen went to sleep). Not happy about that; potential to damage data.
I confirm: this NEVER happened before 8.3, and it now reliably happens EVERY TIME I plug the iPad into power and it goes to sleep. I have three power sources (computer USB, individual Apple charger, aftermarket reserve battery charter) and it happens with all of them.
As far as I can tell, it only reboots itself once per charger-plugin, and doesn't do so again until you unplug it and plug it back in again (somewhat confident, but not 100% sure, of that).
Hope that helps. The bug needs squashing, and soon.